专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2010033704A3 OPTIMIZING THROUGHPUT IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：在无线通信系统中优化吞吐量
公开(公告)号：WO2010033704A3
公开(公告)日：2010-11-04
申请号：PCT/US2009057321
申请日：2009-09-17
申请人： QUALCOMM INC , CUI TAO , LU FENG , GOTETI ANIL KUMAR , SETHURAMAN VIGNESH , RAO SUBRAMANYA P , SUBRAHMANYA PARVATHANATHAN
发明人： CUI TAO , LU FENG , GOTETI ANIL KUMAR , SETHURAMAN VIGNESH , RAO SUBRAMANYA P , SUBRAHMANYA PARVATHANATHAN
IPC分类号： H04L1/20 , H04L1/00
CPC分类号： H04W28/0236 , H04L1/0026 , H04L1/203 , H04W28/0205
摘要： A method for optimizing throughput in a wireless communication system is disclosed. A target metric is estimated based on previous acknowledgment data. A channel quality indicator offset is determined based on the target metric. A channel quality indicator is adjusted based on the channel quality indicator offset. The channel quality indicator indicates the quality of a wireless transmission channel.
摘要翻译：公开了一种用于优化无线通信系统中的吞吐量的方法。目标度量基于先前的确认数据进行估计。信道质量指标偏移量是基于目标度量确定的。信道质量指标根据信道质量指标偏移进行调整。信道质量指示符指示无线传输信道的质量。

2. 发明申请

WO2012087967A1 SPEED-ADAPTIVE CHANNEL QUALITY INDICATOR (CQI) ESTIMATION 审中-公开
标题翻译：速度自适应信道质量指标（CQI）估计
公开(公告)号：WO2012087967A1
公开(公告)日：2012-06-28
申请号：PCT/US2011/065904
申请日：2011-12-19
申请人： QUALCOMM Incorporated , DUA, Aditya , LU, Feng , SETHURAMAN, Vignesh
发明人： DUA, Aditya , LU, Feng , SETHURAMAN, Vignesh
IPC分类号： H04W72/12 , H04L1/00 , H04B7/06 , H04L5/00 , H04B7/04
CPC分类号： H04W72/1231 , H04B17/327 , H04B17/345 , H04L1/0015 , H04L1/0026 , H04L1/20 , H04L25/0212 , H04L25/0224 , H04W72/1284
摘要： A method, apparatus, computer program product, and processing system for generating a channel quality indicator CQI (716) adapted according to the speed of a moving user equipment UE (534). A CQI can be generated by mapping a calculated signal-to-noise ratio SNR to a CQI value. The SNR corresponds to a signal power and a noise power of a received pilot signal. The signal power and the noise power may be generated utilizing respective infinite impulse response IIR filters (612, 614) having filter coefficients chosen in accordance with the speed at which the UE moves (608, 610). Selection of the filter coefficients can be made in accordance with a continuous function or a discontinuous function utilizing a threshold, and may utilize hysteresis.
摘要翻译：一种用于产生根据移动用户设备UE（534）的速度适配的信道质量指示符CQI（716）的方法，装置，计算机程序产品和处理系统。可以通过将计算的信噪比SNR映射到CQI值来生成CQI。 SNR对应于接收到的导频信号的信号功率和噪声功率。可以使用具有根据UE移动速度（608,610）选择的滤波器系数的相应的无限脉冲响应IIR滤波器（612,614）产生信号功率和噪声功率。可以根据使用阈值的连续函数或不连续函数来选择滤波器系数，并且可以利用滞后。

3. 发明申请

WO2012112706A1 REDUCING STEADY STATE ERROR IN FIXED POINT IMPLEMENTATIONS OF RECURSIVE FILTERS 审中-公开
标题翻译：减少重复过滤器固定点实施中的稳态错误
公开(公告)号：WO2012112706A1
公开(公告)日：2012-08-23
申请号：PCT/US2012/025288
申请日：2012-02-15
申请人： QUALCOMM INCORPORATED , SETHURAMAN, Vignesh
发明人： SETHURAMAN, Vignesh
IPC分类号： H03H17/04 , H03H17/02
CPC分类号： H03H17/0219 , H03H17/0461 , H03H2017/022
摘要： One feature includes a method for implementing a fixed point recursive filter that reduces or eliminates steady state error. The method comprises obtaining a first filter state value, processing the first filter state value to remove a scaling factor to obtain a second filter state value, ascertaining that the recursive filter has reached a steady state, determining a nonlinear drift parameter based on a difference between the first filter state value and the second filter state value multiplied by the scaling factor, and adjusting the second filter state value with the nonlinear drift parameter to reduce steady state error of the recursive filter. Ascertaining that the recursive filter has reached the steady state may include determining that a filter output value at time n is equal to a filter output value at time n - 1.
摘要翻译：一个特征包括实现减少或消除稳态误差的定点递归滤波器的方法。该方法包括获得第一滤波器状态值，处理第一滤波器状态值以去除缩放因子以获得第二滤波器状态值，确定递归滤波器已经达到稳定状态，基于第一滤波器状态值之间的差异来确定非线性漂移参数第一滤波器状态值和第二滤波器状态值乘以比例因子，并且利用非线性漂移参数来调整第二滤波器状态值以减小递归滤波器的稳态误差。确定递归滤波器已经达到稳定状态可以包括确定时间n处的滤波器输出值等于时间n-1处的滤波器输出值。

4. 发明申请

WO2010033704A2 OPTIMIZING THROUGHPUT IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：在无线通信系统中优化通路
公开(公告)号：WO2010033704A2
公开(公告)日：2010-03-25
申请号：PCT/US2009/057321
申请日：2009-09-17
申请人： QUALCOMM Incorporated , CUI, Tao , LU, Feng , GOTETI, Anil Kumar , SETHURAMAN, Vignesh , RAO, Subramanya P. , SUBRAHMANYA, Parvathanathan
发明人： CUI, Tao , LU, Feng , GOTETI, Anil Kumar , SETHURAMAN, Vignesh , RAO, Subramanya P. , SUBRAHMANYA, Parvathanathan
IPC分类号： H04L5/00
CPC分类号： H04W28/0236 , H04L1/0026 , H04L1/203 , H04W28/0205
摘要： A method for optimizing throughput in a wireless communication system is disclosed. A target metric is estimated based on previous acknowledgment data. A channel quality indicator offset is determined based on the target metric. A channel quality indicator is adjusted based on the channel quality indicator offset. The channel quality indicator indicates the quality of a wireless transmission channel.
摘要翻译：公开了一种用于优化无线通信系统中的吞吐量的方法。基于先前的确认数据来估计目标度量。基于目标度量确定信道质量指示符偏移量。基于信道质量指示符偏移量调整信道质量指示符。信道质量指示符表示无线传输信道的质量。

5. 发明申请

WO2010028351A3 METHOD AND APPARATUS FOR PREDICTING CHANNEL QUALITY INDICATOR IN A HIGH SPEED DOWNLINK PACKET ACCESS SYSTEM 审中-公开
公开(公告)号：WO2010028351A3
公开(公告)日：2010-03-11
申请号：PCT/US2009/056206
申请日：2009-09-08
申请人： QUALCOMM Incorporated , CUI, Tao , LU, Feng , SETHURAMAN, Vignesh , RAO, Subramanya P. , SUBRAHMANYA, Parvathanathan , GOTETI, Anil Kumar
发明人： CUI, Tao , LU, Feng , SETHURAMAN, Vignesh , RAO, Subramanya P. , SUBRAHMANYA, Parvathanathan , GOTETI, Anil Kumar
IPC分类号： H04L1/00
摘要： Various embodiments are disclosed which predict the channel quality indicator (CQI) in High Speed Downlink Packet Access (HSDPA). The accuracy of CQI is crucial for HSDPA performance. In some HSDPA systems the CQI may be as much as three (3) subframes stale. Accordingly, the prediction of CQI values is required in order to efficiently schedule data for transmission over the communication channel. Various embodiments disclose first order adaptive IIR filters which are significantly less complex than the finite impulse response (FIR) counterparts and achieve similar accuracy. By minimizing the mean squared error (MSE), an exact gradient descent algorithm may be used as well as two embodiment pseudolinear regression algorithms.

6. 发明申请

WO2010028351A2 METHOD AND APPARATUS FOR PREDICTING CHANNEL QUALITY INDICATOR IN A HIGH SPEED DOWNLINK PACKET ACCESS SYSTEM 审中-公开
标题翻译：用于预测高速下行链路分组接入系统中的信道质量指示符的方法和设备
公开(公告)号：WO2010028351A2
公开(公告)日：2010-03-11
申请号：PCT/US2009056206
申请日：2009-09-08
申请人： QUALCOMM INC , CUI TAO , LU FENG , SETHURAMAN VIGNESH , RAO SUBRAMANYA P , SUBRAHMANYA PARVATHANATHAN , GOTETI ANIL KUMAR
发明人： CUI TAO , LU FENG , SETHURAMAN VIGNESH , RAO SUBRAMANYA P , SUBRAHMANYA PARVATHANATHAN , GOTETI ANIL KUMAR
IPC分类号： H04W16/04
CPC分类号： H04L1/0026
摘要： Various embodiments are disclosed which predict the channel quality indicator (CQI) in High Speed Downlink Packet Access (HSDPA). The accuracy of CQI is crucial for HSDPA performance. In some HSDPA systems the CQI may be as much as three (3) subframes stale. Accordingly, the prediction of CQI values is required in order to efficiently schedule data for transmission over the communication channel. Various embodiments disclose first order adaptive IIR filters which are significantly less complex than the finite impulse response (FIR) counterparts and achieve similar accuracy. By minimizing the mean squared error (MSE), an exact gradient descent algorithm may be used as well as two embodiment pseudolinear regression algorithms.
摘要翻译：公开了预测高速下行链路分组接入（HSDPA）中的信道质量指示符（CQI）的各种实施例。 CQI的准确性对于HSDPA性能至关重要。在一些HSDPA系统中，CQI可能多达三（3）个子帧陈旧。因此，为了有效地调度用于在通信信道上传输的数据，需要预测CQI值。各种实施例公开了一阶自适应IIR滤波器，其比有限脉冲响应（FIR）对应物复杂得多，并且实现类似的精度。通过最小化均方误差（MSE），可以使用精确的梯度下降算法以及两个实施例的伪线性回归算法。

7. 发明申请

WO2007059518A1 METHOD AND APPARATUS FOR DERIVING A CHANNEL IMPULSE RESPONSE ESTIMATE FOR A WIRELESS CHANNEL 审中-公开
标题翻译：用于导出无线通道的通道冲击响应估计的方法和装置
公开(公告)号：WO2007059518A1
公开(公告)日：2007-05-24
申请号：PCT/US2006/060948
申请日：2006-11-15
申请人： QUALCOMM INCORPORATED , MERGEN, Gokhan , SETHURAMAN, Vignesh , KASTURI, Nitin , SUBRAHMANYA, Parvathanathan
发明人： MERGEN, Gokhan , SETHURAMAN, Vignesh , KASTURI, Nitin , SUBRAHMANYA, Parvathanathan
IPC分类号： H04L25/02 , H04B1/707
CPC分类号： H04L25/0216 , H04L25/0218
摘要： Techniques for deriving a channel impulse response estimate (CIRE) having improved quality are described. A first CIRE with multiple channel taps is obtained based on (1) an initial CIRE derived from a received pilot or (2) a filtered CIRE derived from the initial CIRE. In one aspect, the channel taps in the first CIRE are scaled with multiple scaling factors to obtain a second CIRE. For point-wise LMMSE scaling, the energy of each channel tap is estimated. The noise energy for the channel taps is also estimated, e.g., based on energies of channel taps on one or both edges of the first CIRE. Each channel tap is scaled based on a scaling factor determined by the energy of that channel tap and the noise energy. Each channel tap with energy below a threshold may be set to zero. In another aspect, the second CIRE is obtained by zeroing out selected ones of the channel taps in the first CIRE.
摘要翻译：描述了用于导出具有改进的质量的信道脉冲响应估计（CIRE）的技术。基于（1）从接收到的导频导出的初始CIRE或（2）从初始CIRE导出的滤波CIRE，获得具有多信道抽头的第一CIRE。在一个方面，第一CIRE中的信道抽头被多个缩放因子缩放以获得第二CIRE。对于逐点LMMSE缩放，估计每个通道抽头的能量。也可以例如基于第一CIRE的一个或两个边缘上的信道抽头的能量来估计信道抽头的噪声能量。每个通道抽头基于由该通道抽头的能量和噪声能量确定的缩放因子进行缩放。能量低于阈值的每个通道抽头可以设置为零。在另一方面，第二CIRE是通过对第一CIRE中的选通的信道抽头进行归零而获得的。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式